In complex analysis, σ is used in the Weierstrass sigma-function. In applied mathematics, σ(T) denotes the spectrum of a linear map T. In number theory, σ is included in various divisor functions, especially the sigma function or sum-of-divisors function. Σ(A), denoting the generated sigma-algebra of a set A Sigma algebra also includes terms such as: In mathematical analysis and in probability theory, there is a type of algebra of sets known as σ-algebra (aka σ-field). In topology, σ-compact topological space is one that can be written as a countable union of compact subsets. In statistics, σ represents standard deviation of population or probability distribution (as opposed to lowercase mu or μ, used for mean). In general mathematics, lowercase σ is commonly used to represent unknown angles, as well as serving as a shorthand for "countably", whereas Σ is regularly used as the operator for summation, e.g.: In linguistics, Σ represents the set of symbols that form an alphabet (see also computer science). In phonology, σ is used to represent syllables. The uppercase form of sigma (Σ) was re-borrowed into the Latin alphabet-more precisely, the International African Alphabet-to serve as the uppercase of modern esh (lowercase: ʃ). In Modern Greek, this sound is voiced to /z/ before /m/, /n/, /v/, /ð/ or /ɣ/. In both Ancient and Modern Greek, the sigma represents the voiceless alveolar fricative /s/. To insert the symbol for standard deviation (sigma) using the symbol dialog, obey the following instructions:The lowercase (σ) & uppercase (Σ) sigma are used for: However, it isn’t also too hard to follow.Īnd once you are able to insert it into your document, you can copy and paste it again whenever the need arises. This method isn’t as simple as the previous methods. If you have to use it several times in your work, you can copy it once and paste it whenever the needs arise.īelow is the symbol for standard deviation (sigma) if you wish to copy and paste it into your Word or Excel document: One of the easiest ways to get the sigma symbol into your work is to simply copy and paste. Copy and paste the sigma symbol (Word and Excel) The keyboard shortcut for sigma in the mac version of Word is Option+W. If you are using Mac, the easiest way to type the sigma symbol in Word is to use the keyboard shortcut. This method doesn’t work on Laptops without a separate numeric keypad. Note: If you are using this Alt code method make sure your PC has a separate numeric keypad and that the Num Lock is turned on. Immediately you press Alt +228 on your keyboard after the alt code, Word will convert the code into a sigma symbol. Type the Sigma symbol Alt code (228) with your numeric keypad. Place the insertion pointer at where you want to insert the sigma symbol.Instead, below are the steps to get the sigma symbol into your Word document using the sigma alt code: However, just typing this code won’t give you the symbol. The alt code for the Sigma symbol is 228. Using Sigma Symbol Alt Code (For MS Word)Įach and every character or symbol in Microsoft Word has a unique character code that you can use to insert these symbols into Word. However, in this tutorial, you’ll learn some of the easy ways to get the sigma or standard deviation symbol into Word or Excel. There are several methods one can use to insert any symbol into any of the Microsoft Office apps. How to insert sigma symbol in Word or Excel However, you can use Alt + 228 to type Sigma anywhere including your browser.įor more ways to insert this and any other symbol into Word or Excel, please keep reading. Note that this shortcut works in Microsoft Word but not in Excel. To type the symbol for standard deviation (sigma) in Word using the shortcut, first type the alt code (03C3), then press Alt+X immediately to convert the code into a sigma symbol. It also has the alt code and the keyboard shortcut. The table below contains the standard deviation symbol (sigma) which you can copy and paste into your Word or Excel document.
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